Sean Michael Oconnor - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Sean Michael Oconnor has filed 3 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $82.55M.
Profile
Sean Michael Oconnor holds the role of Executive Vice-Chairman-Board at StoneX Group Inc. (SNEX). Oconnor has reported 12 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Executive Vice-Chairman-Board, Director |
|---|---|
| Notability | 40/100 |
Board memberships
- StoneX Group Inc.
Reported roles
- Executive Vice-Chairman-Board
Awards & honors
- CEO of StoneX Group Inc.
- Executive Vice-Chairman of the Board
- Director
Trading Pattern
InsiderAlpha's records for Sean Michael Oconnor go back to 2024: 12 primary Form 4 filings, an average of 4.0 per year. 3 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Sean Michael Oconnor has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Executive Vice-Chairman-Board, Director at StoneX Group Inc. (SNEX) - 9 filings, 2024 to 2026
- CEO/President, Director at StoneX Group Inc. (SNEX) - 3 filings, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-24 | SNEX | StoneX Group Inc. | S - Open-market sale [10b5-1] | 104.9K | $74.33 | $7.80M |
| 2026-07-24 | SNEX | StoneX Group Inc. | M - Option exercise [10b5-1] | 225.0K | $8.90 | $2.00M |
| 2026-06-16 | SNEX | StoneX Group Inc. | S - Open-market sale | 75.0K | $135.42 | $10.16M |
| 2026-06-16 | SNEX | StoneX Group Inc. | S - Open-market sale | 75.0K | $131.15 | $9.84M |
| 2026-05-19 | SNEX | StoneX Group Inc. | S - Open-market sale | 72.1K | $109.94 | $7.93M |
| 2026-05-19 | SNEX | StoneX Group Inc. | M - Option exercise | 72.1K | $13.34 | $962K |
| 2026-05-19 | SNEX | StoneX Group Inc. | S - Open-market sale | 87.8K | $111.46 | $9.79M |
| 2026-05-19 | SNEX | StoneX Group Inc. | M - Option exercise | 87.8K | $13.34 | $1.17M |
| 2026-05-19 | SNEX | StoneX Group Inc. | S - Open-market sale | 140.1K | $110.31 | $15.45M |
| 2026-05-19 | SNEX | StoneX Group Inc. | M - Option exercise | 140.1K | $13.34 | $1.87M |
| 2026-04-02 | SNEX | StoneX Group Inc. | F - Tax withholding / forfeiture | 44.3K | $77.95 | $3.45M |
| 2026-02-11 | SNEX | StoneX Group Inc. | S - Open-market sale | 40.0K | $124.56 | $4.98M |
| 2026-02-11 | SNEX | StoneX Group Inc. | M - Option exercise | 40.0K | $20.00 | $800K |
| 2026-02-11 | SNEX | StoneX Group Inc. | S - Open-market sale | 40.0K | $124.95 | $5.00M |
| 2026-02-11 | SNEX | StoneX Group Inc. | M - Option exercise | 40.0K | $20.00 | $800K |
| 2025-08-19 | SNEX | StoneX Group Inc. | S - Open-market sale | 2.0K | $96.50 | $193K |
| 2025-08-19 | SNEX | StoneX Group Inc. | S - Open-market sale | 3.0K | $95.00 | $285K |
| 2025-04-29 | SNEX | StoneX Group Inc. | S - Open-market sale | 3.4K | $90.57 | $309K |
| 2025-04-29 | SNEX | StoneX Group Inc. | S - Open-market sale | 34.1K | $89.63 | $3.05M |
| 2025-03-31 | SNEX | StoneX Group Inc. | A - Grant or award | 300.0K | $0.00 |
Companies - Last 90 Days
- StoneX Group Inc. (SNEX) - 3 filings, last 2026-07-24
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Sean Michael Oconnor has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- William J. Dunaway - $22.55M of SNEX open-market activity in the last 12 months
- Mark Lowry Maurer - $20.46M of SNEX open-market activity in the last 12 months
- Philip Andrew Smith - $13.19M of SNEX open-market activity in the last 12 months
- Diego Rotsztain - $11.32M of SNEX open-market activity in the last 12 months
- Charles M. Lyon - $4.93M of SNEX open-market activity in the last 12 months
- Abigail H. Perkins - $2.15M of SNEX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Trygve Seglem
- Lawrence B. Seidman
- Thomas J. Shaw
- Silver Point Capital L.P.
- SilverBay Capital Management LLC
- Michael Simanovsky
- Bob R. Simpson
- Ranbir Singh
Frequently Asked Questions
Who is Sean Michael Oconnor?
Sean Michael Oconnor holds the role of Executive Vice-Chairman-Board at StoneX Group Inc. (SNEX). Oconnor has reported 12 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Sean Michael Oconnor submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Sean Michael Oconnor been buying or selling stock?
Recorded transactions: 0 open-market purchases and 15 open-market sales ($82.55M) across all tracked filings.
Where can I see all of Sean Michael Oconnor's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Sean Michael Oconnor profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.